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a <br /> � C405.2.3 Manual controls.Manual contxols for lights 5. Daylight responsive controls shall be configured � <br /> �� shall comply with 4he following: to completely shut off all controlled lights in that e <br /> ' 1. Shall be readily accessible ta occupants. zone. a <br /> � <br /> = 2. Shall be located where the controlled lights are 6. Lights in sidelight daylight zones in accordance ° <br /> visible,or shall identify the area served by the with Section C405.2.4.2 facing different cardinal a <br /> lights and indicate their status. orientations(i.e.,within 45 dea ees of due north, � <br /> ° C405.2.4 Daylight responsive contrbls.Daylight east,south,west)shall be controlled � <br /> ; independen#ly of each other. � <br /> a responsive controls complying with Section C405.2.41 �g�eption:Up to two light fixtures in each � <br /> � shall be provided to control the lighting within daylight spaca are permitted to be controlled together m <br /> a zones in the following spaces: � <br /> � with lighting in a daylight zone facing a � <br /> � � l. Sidelight daylight zones as defined in Section different cardinal orientation. o <br /> � C405.2.4.2 with more than two general liahting � <br /> ° fixfures within the primary and secondary 7• Incorporate time-delay circuits to prevent � <br /> � sidelight daylight zones. cycling of light level changes of less than three e <br /> e minutes. � <br /> m 2. Toplight daylight zones as defined in Section � <br /> � 8. �'he ma�mum area a single daylight responsive � <br /> � C405.2.4.3 with more than two general lighting control device serves shall not exceed 2,500 a <br /> fiatures within fhe daylight zone. 2 � <br /> � square feet(232 m). o <br /> � Exception:Daylight responsive controls are not � <br /> � 9. Occupant override capability of daylight � <br /> . required for the following: � <br /> dimming controls is not permitted,other than a � <br /> 1. Spaces in health care facilities where patient reduction of light output from the level � <br /> care is directly provided. established by�the daylighting controls. o <br /> 2. Dwelling units and sleeping units, e <br /> 3. Lighting that is required to have specific C405.2.411 Dimming.Daylight responsive � <br /> application conirol i�i accordance wifh Section controls shall be configured to automatically � <br /> C405.2,4. reduce the power of general lighting in the claylight � <br /> . 4. Sidelight daylight zones on the first floor zone in response to available dayliDht,while a <br /> above grade in Group A-2 and Group M maintaining zrniform illzsmination in the space a <br />� occupancies. through one of the followina methods: � <br /> � <br /> ` a 5. Daylight zones where the total proposed l. Continuous dimming using dimming � <br /> . lighfing power density is less than 35 percent ballasts/dimming drivers and daylight-sensing � <br /> : of the lighting power allowance per Section automatic controls.The system shall reduce e <br /> s C405.4.2. Flighting power continuously to less than 15 : <br /> • C405.2.4.1 Daylight responsive controls funetion. pexcent of rated power at maximum light e <br /> m Where required,daylight responsive controls shall be output. � <br /> o provided within each space for control of lights in 2. Stepped dimming using multi-level switching � <br /> a that space and shall comply tivith all of fhe following: and daylight-sensing controls.The system . <br /> ° i. Lights in primary sidelight daylight zones shall shall provide a minimum of two steps of a <br /> t � uniform illumination between 0 and 100 � <br /> be controlled independently of lights in . <br /> � percent of rated power at maximum light . <br /> � secondary sidelight daylight zones in accordance . <br /> e output.Each step sha11 be in equal increments � <br /> � with Section C405.2.4.2. <br /> 0 Exception: Spaces enclosed by walls or of power,plus or minus 10 pei`cent. � <br /> ; ceiling height partitions with no more than General lighting within daylight zones in offices, ; <br /> � three general lighting fia�tures may have classrooms,laboratories and library readina rooms � <br /> o shall use the continuous dimming method.Stepped o <br /> o combined daylight zone control of primary � <br /> ° and secondary dayliaht zones provided dimming is not allowed as a method of daylight � <br /> ° uniform illumination can be achieved. zone control in these spaces. � <br /> a � <br /> 0 2. Lights in toplight daylight zones in accordance C405.2.4.2 Sidelight daylight zone.The sidelight m <br /> � with Secfion C405.2.43 shall be controlled daylight zone is the�floar area adjacent to vertical � <br /> m independently of 1iDhts in sidelight daylight fenestration which complies with the following: a <br /> a <br /> o zones in accordance with Section C405.2.4.2. l. Where the fenestration is located in a wall,the � <br /> a 3. Daylight responsive controls within each space sidelight daylight zone includes the primary , <br />' � shall be configured so that they can be calibrated and secondary daylight zones.The primary a <br /> , a from within that space by authorized personnel. daylight zone shall extend laterally to the m <br /> � 4. Calibration mechanisms shall be readily nearest full height wall,or up to 1.0 times the m <br />� � <br /> accessibie. <br /> 2015 Washington Stafe Energy Code CE-77 ' <br /> l <br />